Google released new Android Development IDE called Android Studio

This version Android Studio is called EARLY ACCESS PREVIEW.

Android Studio is a new Android development environment based on IntelliJ IDEA. Similar to
Eclipse with the ADT Plugin, Android Studio provides integrated Android developer tools for
development and debugging. On top of the capabilities you expect from IntelliJ, Android Studio
offers:

1. Gradle-based build support.
2. Android-specific refactoring and quick fixes.
3. Lint tools to catch performance, usability, version compatibility and other problems.
4. ProGuard and app-signing capabilities.
5. Template-based wizards to create common Android designs and components.
6. A rich layout editor that allows you to drag-and-drop UI components, preview layouts on multiple screen configurations, and much more.

For more information visit :http://developer.android.com/sdk/installing/studio.html